Home / 18,779.04-28,153.98-7,688.52

Finding the Fourth Proportional to 18,779.04, 28,153.98 and 7,688.52

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Solution

The fourth proportional to 18,779.04, 28,153.98 and 7,688.52 is: 11,526.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.04 : 28,153.98 = 7,688.52 : x
  2. Step 2: Convert to fraction form
    18,779.04/28,153.98 = 7,688.52/x
  3. Step 3: Cross multiply
    18,779.04x = 28,153.98 × 7,688.52
  4. Step 4: Simplify right side
    18,779.04x = 216,462,438.31
  5. Step 5: Solve for x
    x = 216,462,438.31/18,779.04
  6. Step 6: Final answer
    x = 11,526.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.